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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.apache.commons.pool2.proxy;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.lang.reflect.Proxy;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.Arrays;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.apache.commons.pool2.UsageTracking;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>/**<a name="line.24"></a>
<span class="sourceLineNo">025</span> * Provides proxy objects using Java reflection.<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * @param &lt;T&gt; type of the pooled object to be proxied<a name="line.27"></a>
<span class="sourceLineNo">028</span> *<a name="line.28"></a>
<span class="sourceLineNo">029</span> * @since 2.0<a name="line.29"></a>
<span class="sourceLineNo">030</span> */<a name="line.30"></a>
<span class="sourceLineNo">031</span>public class JdkProxySource&lt;T&gt; implements ProxySource&lt;T&gt; {<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    private final ClassLoader classLoader;<a name="line.33"></a>
<span class="sourceLineNo">034</span>    private final Class&lt;?&gt;[] interfaces;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>    /**<a name="line.37"></a>
<span class="sourceLineNo">038</span>     * Constructs a new proxy source for the given interfaces.<a name="line.38"></a>
<span class="sourceLineNo">039</span>     *<a name="line.39"></a>
<span class="sourceLineNo">040</span>     * @param classLoader The class loader with which to create the proxy<a name="line.40"></a>
<span class="sourceLineNo">041</span>     * @param interfaces  The interfaces to proxy<a name="line.41"></a>
<span class="sourceLineNo">042</span>     */<a name="line.42"></a>
<span class="sourceLineNo">043</span>    public JdkProxySource(final ClassLoader classLoader, final Class&lt;?&gt;[] interfaces) {<a name="line.43"></a>
<span class="sourceLineNo">044</span>        this.classLoader = classLoader;<a name="line.44"></a>
<span class="sourceLineNo">045</span>        // Defensive copy<a name="line.45"></a>
<span class="sourceLineNo">046</span>        this.interfaces = new Class&lt;?&gt;[interfaces.length];<a name="line.46"></a>
<span class="sourceLineNo">047</span>        System.arraycopy(interfaces, 0, this.interfaces, 0, interfaces.length);<a name="line.47"></a>
<span class="sourceLineNo">048</span>    }<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    @SuppressWarnings("unchecked") // Cast to T on return.<a name="line.51"></a>
<span class="sourceLineNo">052</span>    @Override<a name="line.52"></a>
<span class="sourceLineNo">053</span>    public T createProxy(final T pooledObject, final UsageTracking&lt;T&gt; usageTracking) {<a name="line.53"></a>
<span class="sourceLineNo">054</span>        return (T) Proxy.newProxyInstance(classLoader, interfaces,<a name="line.54"></a>
<span class="sourceLineNo">055</span>                new JdkProxyHandler&lt;&gt;(pooledObject, usageTracking));<a name="line.55"></a>
<span class="sourceLineNo">056</span>    }<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    @SuppressWarnings("unchecked")<a name="line.59"></a>
<span class="sourceLineNo">060</span>    @Override<a name="line.60"></a>
<span class="sourceLineNo">061</span>    public T resolveProxy(final T proxy) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>        return ((JdkProxyHandler&lt;T&gt;) Proxy.getInvocationHandler(proxy)).disableProxy();<a name="line.62"></a>
<span class="sourceLineNo">063</span>    }<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span>    /**<a name="line.66"></a>
<span class="sourceLineNo">067</span>     * @since 2.4.3<a name="line.67"></a>
<span class="sourceLineNo">068</span>     */<a name="line.68"></a>
<span class="sourceLineNo">069</span>    @Override<a name="line.69"></a>
<span class="sourceLineNo">070</span>    public String toString() {<a name="line.70"></a>
<span class="sourceLineNo">071</span>        final StringBuilder builder = new StringBuilder();<a name="line.71"></a>
<span class="sourceLineNo">072</span>        builder.append("JdkProxySource [classLoader=");<a name="line.72"></a>
<span class="sourceLineNo">073</span>        builder.append(classLoader);<a name="line.73"></a>
<span class="sourceLineNo">074</span>        builder.append(", interfaces=");<a name="line.74"></a>
<span class="sourceLineNo">075</span>        builder.append(Arrays.toString(interfaces));<a name="line.75"></a>
<span class="sourceLineNo">076</span>        builder.append("]");<a name="line.76"></a>
<span class="sourceLineNo">077</span>        return builder.toString();<a name="line.77"></a>
<span class="sourceLineNo">078</span>    }<a name="line.78"></a>
<span class="sourceLineNo">079</span>}<a name="line.79"></a>




























































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